EP0103237A2 - Procédé de fabrication d'enroulements encapsulés en résine pour transformateurs - Google Patents
Procédé de fabrication d'enroulements encapsulés en résine pour transformateurs Download PDFInfo
- Publication number
- EP0103237A2 EP0103237A2 EP83108604A EP83108604A EP0103237A2 EP 0103237 A2 EP0103237 A2 EP 0103237A2 EP 83108604 A EP83108604 A EP 83108604A EP 83108604 A EP83108604 A EP 83108604A EP 0103237 A2 EP0103237 A2 EP 0103237A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coils
- winding
- jacket
- mold
- casting mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
Definitions
- the invention relates to a method for producing windings for transformers embedded in cast resin according to the preamble of claim 1.
- European patent application 80 108 131 already discloses a process for producing windings embedded in cast resin for electrical devices, according to which impregnated, corrugated insulating mats serve as spacers for fixing the electrical device parts to be encased in the mold. These insulating material mats remaining in the cast resin body simultaneously provide reinforcement for the cast resin molded material, which increases the mechanical strength of the cast resin molded material.
- the known method also casts windings from coils lying one behind the other in the axial direction, the casting preferably being carried out in a lying position in an evacuated chamber by a axially parallel slot takes place in the outer jacket of the casting mold and then the hardening of the casting resin composition takes place at least partially in the mold itself at elevated temperature and at atmospheric or higher pressure.
- the invention is therefore based on the object of specifying a method with which the good electrical properties and the mechanical properties of the cast resin body which are improved by inserting reinforcement can be fully utilized in the production of windings embedded in cast resin.
- an inner jacket of the casting mold reduces the radial height of a corrugated and impregnated inner spacer by permanent deformation to the desired dimension of the casting resin wall thickness by spreading the inner jacket in a radial direction, its axially parallel overlapping in the circumferential direction Edges slide on each other and the coils of the winding by friction in the axial direction are fixed on the inner spacer, and the end mold walls also include the end edges of the mold shells with an elastic inside.
- a device according to DE-PS 22 11 685 can be used to spread the inner shaped jacket, according to which profile strips provided on the circumference of a diameter-adjustable winding core change their radial position by moving on bolts in grooves arranged obliquely to the axial direction.
- the spacers are constructed from two layers of corrugated insulating material mats, the direction of the corrugation of one layer against the winding axis + 45 ° and that of the other layer - 45 °, so that the corrugation of the two Layers crossed at 90 °.
- Further measures according to the invention for adapting the cast resin body to occurring loads consist in the spacers projecting beyond the winding at both ends in the axial direction and in fiber bundles stretched in the circumferential direction formed by the bobbins and the spacers when the winding is rotating slowly, and in addition to that Reinforcement of the cast resin body also fiber bundles are inserted into the axially parallel shafts of the spacers.
- fabric or fleece mats made of glass or polyester fibers impregnated with pure casting resin are used and serve as casting resin filled with pure quartz powder or pure epoxy resin.
- a further expedient development of the invention consists in that the coils of the winding are pushed over the bare inner jacket of the casting mold and the inner spacer when the coils are held between the circumferentially overlapping edges of the slowly rotating inner jacket of the casting mold from a magazine in the same its installation position is pulled.
- the method according to the invention for the production of castings of transformers embedded in cast resin is very advantageous, because it allows the adjustment of the particularly important and critical wall thickness of the cast resin encapsulation on the inside of the winding by deformation of the inserted reinforcement to practically any desired size, the initial dimensions of the spacers for a larger range of the cast resin body wall thickness are the same.
- Coils 1 for a transformer winding are wound individually and independently of one another in a manner known per se on special devices. All coils 1 to be embedded in a common cast resin block lie in the radial direction between an inner spacer 2 and an outer spacer 3.
- the spacers 2 and 3 in turn consist of woven or non-woven mats made of glass or epoxy resin and are corrugated like corrugated paper.
- the waves normally extend parallel to the winding axis, the wave height being approximately equal to the wavelength.
- An inner jacket 5 of a casting mold is pressed onto the inside of the inner spacer 2 in the direction of the arrows 4.
- the pressing force required for this is transferred to the inner jacket 5 in a manner known per se by strips or other devices displaced on cones or inclined planes.
- 5 balls or rollers are attached to the strips, not shown, along the lines of contact with the inner casing.
- the inner jacket 5 is so far spread under deformation of the inner spacer 2 regardless of diameter tolerances that the thickness of the gap to be filled with casting resin just withstands the electrical and / or mechanical stress to be expected of the casting resin molding material during operation. Based on this, the dimensioning of the inner spacer 2 is previously designed with regard to the mechanical load to be expected.
- an outer jacket 6 of a casting mold is placed, which essentially rests on the waves of the outer spacer 3 and applied to the bandages comprising them.
- an axially parallel bulge 7 is provided, which forms a reinforcement on the cast resin body for receiving the winding leads and connection contacts.
- a slot 8 is provided which is flanked by wall strips 9 which are bent approximately in the radial direction and which serves as a vent and pouring opening for the casting mold.
- end mold walls 10 The end faces of the casting mold are closed by end mold walls 10, the side of which facing the inner jacket 5 and the outer jacket 6 is covered with a layer 11 of elastic material.
- the end mold walls 10 are so strong with their layer 11 by an anchor plate 13 to the front edges of the inner shell 5 and the outer Sheath 6 pressed that they are pressed into the elastic layer 11.
- the required pressing force for the anchor plates 13 is applied by nuts 14 on a tie rod 12.
- the arrangement of coils 1, the inner spacer 2 and the outer spacer 3, which is embedded in the casting mold from the inner shell 5, the outer shell 6 and the end mold walls 10, is evacuated to a complete vacuum in a chamber (not shown) and then poured with pure epoxy resin or with an epoxy resin mixture containing up to 75% quartz powder. Depending on the existing conditions, the shape, the coils 1 and / or the casting compound are preheated.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83108604T ATE21185T1 (de) | 1982-09-14 | 1983-08-31 | Verfahren zur herstellung in giessharz eingebetteter wicklungen fuer transformatoren. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823234098 DE3234098A1 (de) | 1982-09-14 | 1982-09-14 | Verfahren zur herstellung in giessharz eingebetteter wicklungen fuer transformatoren |
DE3234098 | 1982-09-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0103237A2 true EP0103237A2 (fr) | 1984-03-21 |
EP0103237A3 EP0103237A3 (en) | 1985-01-23 |
EP0103237B1 EP0103237B1 (fr) | 1986-07-30 |
Family
ID=6173212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83108604A Expired EP0103237B1 (fr) | 1982-09-14 | 1983-08-31 | Procédé de fabrication d'enroulements encapsulés en résine pour transformateurs |
Country Status (5)
Country | Link |
---|---|
US (1) | US4540536A (fr) |
EP (1) | EP0103237B1 (fr) |
JP (1) | JPS5966110A (fr) |
AT (1) | ATE21185T1 (fr) |
DE (2) | DE3234098A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0129819A1 (fr) * | 1983-06-27 | 1985-01-02 | Siemens Aktiengesellschaft | Procédé d'imprégnation et revêtement de bobinages électriques |
EP0172494A1 (fr) * | 1984-08-20 | 1986-02-26 | Siemens Aktiengesellschaft | Procédé pour la fabrication d'enroulements noyés dans de la résine moulable pour transformateurs |
EP0295669A1 (fr) * | 1987-06-19 | 1988-12-21 | Alcatel SEL Aktiengesellschaft | Procédé pour noyer une matière à enrouler électrique dans une masse isolante et moule à fondre utilisé à cet effet |
WO1999049478A2 (fr) * | 1998-03-26 | 1999-09-30 | Gennady Mikhailovich Chernykh | Procede d'impregnation et de polymerisation d'un composant epoxy pour une bobine a courant eleve |
NL1017426C2 (nl) * | 2001-02-22 | 2002-08-23 | Tno | Werkwijze voor het vervaardigen van een elektromagnetische spoel, inrichting verkregen met de werkwijze alsmede actuator. |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6070941A (ja) * | 1983-09-28 | 1985-04-22 | Tokuzo Inariba | 小型電動機用極歯群構造体及びその製造方法 |
US4876050A (en) * | 1985-06-24 | 1989-10-24 | Murdock, Inc. | Process for dry fiber winding and impregnating of projectiles |
JPS63192219A (ja) * | 1987-02-04 | 1988-08-09 | Takaoka Ind Ltd | 固体絶縁タイプ変圧器の製造方法 |
US5240661A (en) * | 1990-04-24 | 1993-08-31 | United Technlogies Corp. | Fabrication process for composite swashplate |
DE4426138C2 (de) * | 1994-07-22 | 1998-04-23 | Siemens Ag | Gießform für eine Transformatorspule mit Kontrollmöglichkeit des Vergusses |
DE19835361A1 (de) * | 1998-08-05 | 2000-02-10 | Abb Patent Gmbh | Verfahren und Vorrichtung zum Imprägnieren von Leiterstäben für die Statorwicklung einer elektrischen Maschine |
US6221297B1 (en) | 1999-09-27 | 2001-04-24 | Abb Power T&D Company Inc. | Method of manufacturing a transformer coil with a disposable wrap and band mold and integrated winding mandrel |
DE60037323T2 (de) * | 1999-09-27 | 2008-11-27 | Abb Inc. | Verfahren zur herstellung einer transformatorenspule mit einweg-wickel- und -band-werkzeug und integriertem wickelkern |
US6223421B1 (en) | 1999-09-27 | 2001-05-01 | Abb Power T&D Company Inc. | Method of manufacturing a transformer coil with a disposable mandrel and mold |
US6930579B2 (en) * | 2003-06-11 | 2005-08-16 | Abb Technology Ag | Low voltage composite mold |
NL1025960C2 (nl) * | 2004-04-16 | 2005-10-18 | Spectralyte Res & Dev B V | Werkwijze en inrichting voor vervaardigen van een voortbrengsel uit composiet materiaal. |
CN100563978C (zh) * | 2005-03-29 | 2009-12-02 | 黄胜昌 | 标签模内一体成型的模具 |
DE112009005222B4 (de) * | 2009-09-11 | 2022-12-29 | Hitachi Energy Switzerland Ag | Transformator mit einem Wärmerohr und Verfahren zur Herstellung eines Transformators |
EP2320440B1 (fr) * | 2009-11-05 | 2013-01-09 | ABB Technology AG | Enroulement de transformateur et procédé de renforcement d'un enroulement de transformateur |
EP2325852A1 (fr) * | 2009-11-18 | 2011-05-25 | ABB Technology AG | Procédé de fabrication d'une bobine de transformateur |
US9257229B2 (en) | 2011-09-13 | 2016-02-09 | Abb Technology Ag | Cast split low voltage coil with integrated cooling duct placement after winding process |
JP6830568B1 (ja) | 2019-08-06 | 2021-02-17 | 株式会社アシックス | 射出成形品および靴 |
US11802053B2 (en) | 2021-06-10 | 2023-10-31 | Daniel Hodes | Method and apparatus for the fabrication of diamond by shockwaves |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR429263A (fr) * | 1911-05-04 | 1911-09-19 | Jonh Lewis Milton | Bobines électriques de haute tension et leur mode de fabrication |
GB204491A (en) * | 1922-08-30 | 1923-10-04 | Gen Electric | Improvements in and relating to electrical coils and methods of manufacturing the same |
US1616063A (en) * | 1924-08-06 | 1927-02-01 | John Stogdell Stokes | Adjustable cylindrical tubing and method of making the same |
GB586001A (en) * | 1944-02-28 | 1947-03-04 | Telephone Mfg Co Ltd | Improvements in or relating to the insulation of coils for electrical apparatus |
DE1251863B (fr) * | 1967-10-12 | |||
US3377602A (en) * | 1966-05-31 | 1968-04-09 | Eltra Corp | Core supporting structure having encapsulated coil thereon |
DE1490909A1 (de) * | 1964-11-20 | 1969-06-19 | Liebknecht Transformat | Hochspannungsisolation,insbesondere fuer Stromwandler,und Verfahren zur Herstellung der Hochspannungsisolation |
DE2041047A1 (de) * | 1969-08-21 | 1971-02-25 | Ciba Geigy | Verfahren und Vorrichtung zum Impraegnieren von Koerpern,insbesondere elektrische Wicklungen,mit haertbaren Giessharzmassen |
US3796621A (en) * | 1971-09-10 | 1974-03-12 | Aluminum Co Of America | Method of fabricating a laminate and product thereof |
DE2733024A1 (de) * | 1977-07-21 | 1979-01-25 | Siemens Ag | Schichtisolation fuer spannungsfuehrende elektrische bauteile |
DE2927400A1 (de) * | 1979-07-06 | 1981-01-08 | Siemens Ag | Hochspannungsisolierung, insbesondere fuer elektrische spulen und verfahren zur herstellung der hochspannungsisolierung |
EP0031576A1 (fr) * | 1979-12-28 | 1981-07-08 | Fuji Electric Co. Ltd. | Procédé pour encapsuler un appareil électrique |
JPS57134917A (en) * | 1981-02-16 | 1982-08-20 | Hitachi Ltd | Fabrication of resin-molded coil |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1281258A (en) * | 1917-02-13 | 1918-10-15 | B R Greenblatt | Contracting metal core for ring-molds. |
US2856639A (en) * | 1953-04-13 | 1958-10-21 | Bernard F Forrest | Method of encasing electric coils |
US2937408A (en) * | 1954-06-01 | 1960-05-24 | Smith Corp A O | Method to insulate dynamoelectric machine windings by centrifugally casting |
US2925570A (en) * | 1954-08-12 | 1960-02-16 | Strock Howard Eugene | Current transformer |
US3046604A (en) * | 1958-02-04 | 1962-07-31 | Us Electrical Motors Inc | Waterproof stator construction for submersible dynamoelectric machine |
US3041562A (en) * | 1958-09-10 | 1962-06-26 | Essex Wire Corp | Ignition coil |
US3084418A (en) * | 1959-03-03 | 1963-04-09 | Sperry Rand Corp | Method of encapsulating electrical stators |
US3084390A (en) * | 1959-09-17 | 1963-04-09 | Controls Co Of America | Molding apparatus for encapsulating a coil |
FR1290787A (fr) * | 1961-06-03 | 1962-04-13 | Epoxylite Corp | Procédé pour l'enrobage d'organes électriques et articles réalisés selon ce procédé |
-
1982
- 1982-09-14 DE DE19823234098 patent/DE3234098A1/de not_active Withdrawn
-
1983
- 1983-08-31 DE DE8383108604T patent/DE3364953D1/de not_active Expired
- 1983-08-31 AT AT83108604T patent/ATE21185T1/de not_active IP Right Cessation
- 1983-08-31 EP EP83108604A patent/EP0103237B1/fr not_active Expired
- 1983-09-09 JP JP58167381A patent/JPS5966110A/ja active Pending
- 1983-09-13 US US06/531,778 patent/US4540536A/en not_active Expired - Lifetime
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1251863B (fr) * | 1967-10-12 | |||
FR429263A (fr) * | 1911-05-04 | 1911-09-19 | Jonh Lewis Milton | Bobines électriques de haute tension et leur mode de fabrication |
GB204491A (en) * | 1922-08-30 | 1923-10-04 | Gen Electric | Improvements in and relating to electrical coils and methods of manufacturing the same |
US1616063A (en) * | 1924-08-06 | 1927-02-01 | John Stogdell Stokes | Adjustable cylindrical tubing and method of making the same |
GB586001A (en) * | 1944-02-28 | 1947-03-04 | Telephone Mfg Co Ltd | Improvements in or relating to the insulation of coils for electrical apparatus |
DE1490909A1 (de) * | 1964-11-20 | 1969-06-19 | Liebknecht Transformat | Hochspannungsisolation,insbesondere fuer Stromwandler,und Verfahren zur Herstellung der Hochspannungsisolation |
US3377602A (en) * | 1966-05-31 | 1968-04-09 | Eltra Corp | Core supporting structure having encapsulated coil thereon |
DE2041047A1 (de) * | 1969-08-21 | 1971-02-25 | Ciba Geigy | Verfahren und Vorrichtung zum Impraegnieren von Koerpern,insbesondere elektrische Wicklungen,mit haertbaren Giessharzmassen |
US3796621A (en) * | 1971-09-10 | 1974-03-12 | Aluminum Co Of America | Method of fabricating a laminate and product thereof |
DE2733024A1 (de) * | 1977-07-21 | 1979-01-25 | Siemens Ag | Schichtisolation fuer spannungsfuehrende elektrische bauteile |
DE2927400A1 (de) * | 1979-07-06 | 1981-01-08 | Siemens Ag | Hochspannungsisolierung, insbesondere fuer elektrische spulen und verfahren zur herstellung der hochspannungsisolierung |
EP0031576A1 (fr) * | 1979-12-28 | 1981-07-08 | Fuji Electric Co. Ltd. | Procédé pour encapsuler un appareil électrique |
JPS57134917A (en) * | 1981-02-16 | 1982-08-20 | Hitachi Ltd | Fabrication of resin-molded coil |
Non-Patent Citations (1)
Title |
---|
PATENTS ABSTRACTS OF JAPAN, Band 6, Nr. 234(E-143)(1112), 20. November 1982; & JP-A-57 134 917 (HITACHI SEISAKUSHO) 20.08.1982 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0129819A1 (fr) * | 1983-06-27 | 1985-01-02 | Siemens Aktiengesellschaft | Procédé d'imprégnation et revêtement de bobinages électriques |
EP0172494A1 (fr) * | 1984-08-20 | 1986-02-26 | Siemens Aktiengesellschaft | Procédé pour la fabrication d'enroulements noyés dans de la résine moulable pour transformateurs |
EP0295669A1 (fr) * | 1987-06-19 | 1988-12-21 | Alcatel SEL Aktiengesellschaft | Procédé pour noyer une matière à enrouler électrique dans une masse isolante et moule à fondre utilisé à cet effet |
WO1999049478A2 (fr) * | 1998-03-26 | 1999-09-30 | Gennady Mikhailovich Chernykh | Procede d'impregnation et de polymerisation d'un composant epoxy pour une bobine a courant eleve |
WO1999049478A3 (fr) * | 1998-03-26 | 1999-12-02 | Gennady Mikhailovich Chernykh | Procede d'impregnation et de polymerisation d'un composant epoxy pour une bobine a courant eleve |
NL1017426C2 (nl) * | 2001-02-22 | 2002-08-23 | Tno | Werkwijze voor het vervaardigen van een elektromagnetische spoel, inrichting verkregen met de werkwijze alsmede actuator. |
WO2002067277A1 (fr) * | 2001-02-22 | 2002-08-29 | Nederlandse Organisatie Voor Toegepast Natuurwetenschappelijk Onderzoek Tno | Procede de fabrication d'une bobine electromagnetique, dispositif obtenu conformement audit procede et actionneur |
Also Published As
Publication number | Publication date |
---|---|
US4540536A (en) | 1985-09-10 |
EP0103237A3 (en) | 1985-01-23 |
DE3234098A1 (de) | 1984-03-15 |
DE3364953D1 (en) | 1986-09-04 |
JPS5966110A (ja) | 1984-04-14 |
ATE21185T1 (de) | 1986-08-15 |
EP0103237B1 (fr) | 1986-07-30 |
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